Home / 13,135.90-19,709.70-6,894.40

Finding the Fourth Proportional to 13,135.90, 19,709.70 and 6,894.40

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Solution

The fourth proportional to 13,135.90, 19,709.70 and 6,894.40 is: 10,344.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.90 : 19,709.70 = 6,894.40 : x
  2. Step 2: Convert to fraction form
    13,135.90/19,709.70 = 6,894.40/x
  3. Step 3: Cross multiply
    13,135.90x = 19,709.70 × 6,894.40
  4. Step 4: Simplify right side
    13,135.90x = 135,886,555.68
  5. Step 5: Solve for x
    x = 135,886,555.68/13,135.90
  6. Step 6: Final answer
    x = 10,344.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.